Potomac River at Williamsport, Washington County MD (WLLM2)
Gage Location: Washington County, Maryland	Site Location: Washington County, Maryland
Latitude: 39.609	Longitude: -77.848	Elevation: 327.7 ft. MSL	Drainage Area: 4943 Sq. Mi.
Minor Stage: 23 ft.	Moderate Stage: 25 ft.	Major Stage: 28 ft.
First Flood: 1936-03-18	Last Flood: 1996-09-08 Crest: 31.1 ft.	Datum change: 1932-01-01	Number of Floods: 8

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Month Number of Floods After Datum Number of Floods Total Cumulative Total After Datum Cumulative Total January 1 1 1 1 February 0 0 1 1 March 1 1 2 2 April 1 1 3 3 May 0 0 3 3 June 1 1 4 4 July 0 0 4 4 August 0 0 4 4 September 1 1 5 5 October 2 2 7 7 November 1 1 8 8 December 0 0 8 8 Seasonal Totals Winter (Dec-Jan-Feb) 1 Spring (Mar-Apr-May) 2 Summer (Jun-Jul-Aug) 1 Fall (Sep-Oct-Nov) 4